Search Results (496)

Mangrove ecosystems underpin the livelihoods of coastal and rural households across the tropics, yet how their ecosystem service (ES) values are associated with livelihood-strategy choices remains unevenly understood. Following a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-guided protocol, this systematic review searched Web of Science and Scopus for studies published between 2016 and 2026 (database search was run on 27 May 2026); of the 353 records identified and 207 screened after removing 146 duplicates, 133 unique studies were retained; 95 of these contributed evidence to one or more of seven outcome themes, while 38 were retained as contextual or background evidence. The seven themes were graded using a hybrid Grading of Recommendations Assessment, Development and Evaluation (GRADE)/Confidence in the Evidence from Reviews of Qualitative Research (CERQual) approach (zero, high certainty; two, moderate certainty; five, low certainty). A structured assessment of meta-analytic feasibility across six candidate outcome domains found that no domain met the operational requirement of at least three independent studies reporting one outcome construct on a harmonisable metric with usable variance information; therefore, this review reports the direction, consistency, and certainty of associations rather than pooled-effect magnitudes. The corpus shows a pronounced value-epistemology asymmetry, with monetary valuation forming the largest single evidence theme (45 studies, approximately one-third of the corpus) and relational or indigenous framings remaining a smaller but substantive theme (20 studies, about 15%), meaning that household decision-making is incompletely captured. Evidence for mangrove–fishery production linkages and the coastal-protection/ecosystem-based disaster-risk-reduction function was the most consistent and was rated as moderate certainty. However, the fishery evidence provides the more direct connection to livelihood dependence, whereas most coastal-protection estimates are biophysical or aggregate and do not directly demonstrate household livelihood-strategy responses. The five remaining themes rest on low-certainty evidence, with welfare estimates spanning orders of magnitude and value-to-behaviour pathways weakly tested. Asian settings account for roughly half of the evidence (Southeast and South Asia together 45%, 60/133), while African, Latin American, and Pacific Island settings remain under-represented, limiting transferability. Evidence on bundled payments for ecosystem services, blue-carbon governance, and secure community tenure should therefore be treated as context-dependent options for prospective evaluation rather than as established prescriptions. The clearest research priority is quasi-experimental and longitudinal work linking elicited values to observed livelihood behaviour. Full article

Against the backdrop of accelerating globalization and the reconfiguration of ecological security patterns, border regions—serving as critical carriers of national spatial governance—exhibit pronounced spatial heterogeneity and stage-dependent characteristics in land use evolution that warrant systematic investigation. This study focuses on global border zones to reveal the trends and evolutionary pathways of land use change, thereby providing a scientific basis for border spatial governance. Using the period of 1992–2020, four phases of global land cover data from the European Space Agency (ESA) were employed. Buffer zones of 50 km, 100 km, and 150 km were established along global national boundaries, and the study period was divided into three decadal stages. Border types were classified into terrestrial borders, coastal borders, and island borders. An integrated indicator system was constructed, including the Single Land Use Dynamic Degree (SLUDD), Integrated Land Use Dynamic Degree (ILUDD), and Weighted Composite Transition Intensity. A multi-scale nested analytical framework coupled with transition matrices was applied to assess land use evolution across global, continental, and bilateral national scales. The results indicate the following: (1) Distinct evolutionary pathways exist among border types. Terrestrial borders exhibit a combination of development and ecological restoration, with staged peaks in urban expansion; coastal borders are dominated by a unidirectional conversion from cropland to built-up land; and island borders demonstrate concurrent agricultural decline, ecological recovery, and built-up expansion. (2) From 1992 to 2020, global border land use underwent a transition from high-intensity transformations to low-intensity steady adjustments. Major changes were centered on the expansion of production space, outward diffusion of built-up areas, and vegetation restructuring. High-intensity changes were concentrated near boundary zones and attenuated significantly with increasing buffer distance. (3) At the continental scale, stable hierarchical patterns emerge in terms of change intensity, spatial gradients, and transition structures. Borders in Eurasia and North America show higher activity, Africa exhibits widespread diffusion, and South America and Oceania are characterized by forest boundary reshaping and vegetation adjustments, respectively. (4) Typical border regions can be categorized into three evolutionary types: forest ecological frontiers, agricultural expansion zones, and land–sea composite corridors. Regional trajectories vary significantly, with Southeast Asia transitioning rapidly toward stabilization, West Africa retaining periodic high-intensity disturbances, and South America remaining in a low-intensity adjustment state. This study clarifies the evolutionary patterns and boundary effect ranges of global border land use, providing theoretical support and empirical references for resource allocation and ecological regulation in border regions. It also lays the groundwork for refining border typologies, quantifying driving mechanisms, and developing differentiated cross-border governance strategies. Full article

The Seville root-knot nematode, Meloidogyne hispanica (Nematoda: Meloidogynidae), is a highly specialized plant pathogen nematode, posing a significant threat to global agricultural production. Based on 18 validated global occurrence records of M. hispanica, the biomod2 ensemble model was applied to predict its potential habitat distribution under current and future climate scenarios. The global distribution records of M. hispanica were collected and combined with 19 bioclimatic variables and one environmental variable, while five key environmental factors (i.e., bio15, bio7, bio13, bio2, and elevation) were picked out for model development through principal component analysis (PCA) and correlation screening. The results indicated that the biomod2 ensemble model chooses from 13 individual algorithms (ANN, CTA, FDA, GAM, GBM, GLM, MARS, MAXENT, MAXNET, RF, RFd, SRE, and XGBoost), of which seven high-performing models were retained for the TSS-weighted ensemble that balances coverage, stability and explanatory capability, with a cross-validated TSS of 0.724 ± 0.144 and AUC of 0.892 ± 0.059 (calibration TSS = 0.923, AUC = 0.976). The current potential suitable habitats of M. hispanica are primarily concentrated in the low-latitude region between 15° N and 30° N, including the Gulf of Mexico, the Caribbean Islands, the South Asian subcontinent, and the coastal areas of Southeast Asia. Under future climate scenarios, the potential suitable habitat range of M. hispanica in China was projected to expand northward, contract westward, and remain absent from plateau regions. The North China Plain and the southern Loess Plateau would likely become new expansion areas, whereas the southwestern plateau would show a reduction in suitability. Given the limited number of occurrence records, this study should be interpreted as a preliminary, climate-based risk assessment to guide surveillance and quarantine prioritization. Full article

Positioned as a node of low-end globalization, the Chungking Mansions in Hong Kong’s Tsim Sha Tsui represents a transnational urban space with many ethnic restaurants, grocery stores, shops and cheap hotels. As a vertical hub of superdiversity, the building features significant number of people from South Asia (e.g., India, Pakistan, Bangladesh and Nepal), Southeast Asia, Africa and beyond. Unlike most ethnic enclaves and multicultural areas that feature horizontal spatial organization, the Chungking Mansions conceptually represents a vertical ‘Little South Asia’ or ‘Little UN’ condensed into one building. The transient and anonymous Chungking Mansions is something of a ‘non-place’ but it also has a sense of community. The building over time gained a bad reputation as a mysterious, dodgy, shady and dangerous ethnic place where violence and crimes take place. This article aims to demystify the Chungking Mansions from under-explored sociolinguistic/multilingual perspectives. Languages and symbols inscribed in the linguistic/semiotic landscape, we argue, represent important anthropogenic impacts on geography and nature, which constitute salient entry points into understanding how migration, low-end globalization and superdiversity leave traces on the urban landscape. This study documents and shows how various multilingual signs and cultural and religious symbols enact ethnic, linguistic, cultural and religious identities and produce and reproduce social meanings alongside the building’s verticality. These materially and symbolically contribute to a vertical geography of superdiversity. Full article

Air pollution is a growing environmental issue in rapidly urbanizing Asian cities, where meteorological conditions and seasonal variability strongly influence pollutant concentrations. This review synthesizes published evidence on the interactions between meteorology, seasonality, and urban air pollution across selected cities in East Asia, South Asia, and Southeast Asia. The literature was collected from major scientific databases and organized according to meteorological drivers, seasonal characteristics, and dominant emission sources. Particular emphasis was placed on particulate matter (PM_2.5 and PM₁₀), SO₂, NO₂, NO_x, CO, and O₃. The reviewed studies indicate that wind speed and direction, precipitation, temperature, atmospheric stability, and monsoon circulation strongly influence pollutant transport, dispersion, and removal. Pollutant concentrations generally reach their highest in winter due to stagnant conditions and higher human emissions. In contrast, the summer and monsoon seasons tend to have lower PM levels due to better atmospheric mixing and wet deposition. Regional differences in dominant sources were also observed, including coal combustion and heating in East Asia, traffic and biomass burning in South Asia, and biomass burning and transboundary transport in Southeast Asia. These findings highlight the importance of seasonally adaptive and region-specific air quality management strategies in Asian cities. Full article

Phosphorus (P) deficiency is a major nutritional constraint limiting the regeneration and large-scale cultivation of Homalium ceylanicum, a valuable tropical timber species in South and Southeast Asia. To identify an optimal P supply strategy for producing high-quality planting stock, we assessed the growth performance, photosynthetic characteristics, and nutrient status of one-year-old H. ceylanicum seedlings in response to exponential P fertilization at six levels: 0 (control), 25, 50, 100, 200 and 300 mg P per seedling. Seedlings supplied with 50 mg P per seedling performed best, with height, leaf biomass, and leaf area increasing by 57.5%, 152.0%, and 164.7%, respectively, relative to the unfertilized control. These enhancements were paralleled by significant improvements in net photosynthetic rate, chlorophyll content, photosystem II (PSII) photochemical efficiency, and gas exchange, indicating that enhanced photosynthetic carbon assimilation contributed to growth promotion. At the whole-plant level, this coordinated improvement in growth and photosynthesis was accompanied by a 171.04% increase in nitrogen (N) accumulation without inducing excessive P accumulation. In contrast, P supply above 100 mg per seedling reduced seedling height and root collar diameter, suppressed whole-plant biomass accumulation, and disrupted nutrient balance through excessive P accumulation and antagonistic effects on N and K (potassium). Vector analysis further confirmed 50 mg P per seedling as the optimal nutrient-loading dose, achieving effective P loading without inducing N or K excess or nutrient imbalance. In conclusion, exponential P fertilization at 50 mg P per seedling is a targeted nutritional strategy for producing high-quality planting stock, thereby supporting the plantation forestry of H. ceylanicum. Full article

Background: Familial hypercholesterolaemia (FH) is a common monogenic cause of premature coronary artery disease (CAD), yet data from South-East Asia are sparse and the yield of family cascade screening has not previously been reported in Vietnam. Methods: In this prospective, single-centre cohort study (March 2023–September 2025), 500 consecutive patients with premature CAD (men < 55 years, women < 60 years) underwent targeted next-generation sequencing of LDLR, APOB and PCSK9, with Sanger confirmation of pathogenic or likely pathogenic (P/LP) variants. First-degree relatives of variant-positive index patients were offered structured counselling and cascade sequencing of the family-specific variant. Results: A P/LP variant was identified in 18 of 500 patients (3.6%; 95% CI 2.1–5.4%); 17 (94.4%) involved LDLR and one APOB. Nine distinct P/LP variants were observed, with several recurrent, consistent with possible founder effects. Two carriers were homozygous, including one with an APOB frameshift attributable to consanguinity. Variant carriers were younger (mean difference −5.6 years, 95% CI −9.2 to −2.0) with higher LDL-cholesterol (median 227.5 vs. 138 mg/dL) and more extensive coronary disease than non-carriers. Cascade screening was completed in 20 of 26 eligible families (77%); among 105 first-degree relatives tested, 46 (43.8%; 95% CI 34.7–53.4%) carried the family-specific variant, most of them young, asymptomatic offspring or siblings. Conclusions: Precise molecular diagnosis in a small number of index patients identified a much larger cohort of at-risk relatives who would otherwise have remained undiagnosed, providing the first Vietnamese evidence that hospital-anchored cascade screening is feasible and high-yielding in a resource-limited setting. Full article

Banten Province, Indonesia, is a critical yet overlooked frontier of urbanisation. Despite being one of Southeast Asia’s fastest-urbanising regions, its secondary cities, towns and peri-urban hinterlands remain marginal in urban studies and sustainability science. This neglect is consequential. Future urban growth will increasingly concentrate in such settlements, yet debates on urbanisation in Indonesia and Southeast Asia remain focused on metropolitan regions such as Jakarta, one of the world’s largest urban areas. This paper addresses this gap by combining a cross-sector participatory horizon scan with a responsive development pathway for under-resourced territories. Thirty-four participants from academia, government and professional associations co-produced insights into Banten’s urban trajectories, triangulated with literature and secondary data. To our knowledge, this study draws on the first expert workshop on Banten’s urbanisation of this scale, cross-sectoral reach and disciplinary breadth, spanning six domains: economic development, physical infrastructure, social development, cultural heritage, environment and biodiversity, and disaster vulnerability. The deliberations also identified nine cross-cutting issues—including governance deficits, environmental injustice and climate risk—that underpin territorial inequality. From these findings, the paper synthesises a responsive development pathway that supports coordinated planning and governance across Banten’s urbanising settlements and offers a transferable model for negotiating extended urbanisation in rapidly urbanising Global South regions. Full article

Cancer stem cell (CSC) persistence drives recurrence and therapy resistance in oral squamous cell carcinoma (OSCC), but what keeps cells locked in this stem-like state is poorly understood. In this narrative review, we propose that CSC state is sustained not by any single pathway but by joint dysregulation of three interacting cell-biological systems: membrane potential (V_mem), communication between neighbouring cells through gap junctional intercellular communication (GJIC), and the Hippo–YAP pathway. We argue that these systems act together on one common point—the YAP protein, retained in the nucleus—which switches on a SOX2-centred stemness gene programme and stabilises a self-reinforcing CSC state. Drawing on evidence from cancer genomics, developmental bioelectricity, connexin biology, and OSCC-specific studies, we reconstruct how membrane depolarisation, loss of gap junction coupling, FAT1 mutation, and Hippo pathway inactivation could converge on persistent nuclear YAP, and how betel quid—the principal risk factor across South and Southeast Asia—may engage all three systems at once. Because the model holds that each input reinforces the others, it predicts that targeting several together should displace CSC state more durably than targeting any one alone. We set out the testable predictions this framework generates. Full article

The Asian tiger mosquito (Aedes albopictus) is an invasive species that has become widespread throughout the Americas. It is a vector for several arboviruses, making it an increasing threat to human health as its range expands. To characterize population genetic structure and gain insight into the origin and spread of this invasive mosquito, we genotyped 959 individuals using ~20k SNPs. We included 50 localities across the Americas, and previously genotyped mosquitoes from 28 localities in Asia and 14 in Europe. Our analyses revealed that populations in North America were distinct from populations in South America, and this relationship was consistently supported across analyses. Most North American mosquitoes shared a common origin with those from Japan and Southern Europe (e.g., Italy, Spain), with the exception of individuals from California, which clustered with more southern areas of East Asia (China and Vietnam), as well as Greece. Brazilian and Argentinian populations were distinct from all other sampled locations, including those in the native range, but were most closely related to mosquitoes from more tropical locations in South and Southeast Asia. By revealing the likely sources of invasions in the Americas, our findings have important implications for understanding invasion dynamics of this species. Full article

The bean bug, Riptortus pedestris (Fabricius), and the southern green stink bug, Nezara viridula (L.), are important pod-sucking pests of soybean, Glycine max (L.) Merr. Their feeding on pods and developing seeds induces soybean staygreen symptoms and causes severe yield losses. To assess their future damage risk, we integrated MaxEnt, PCA env and a phenological matching index (PMI) using global occurrence records, bioclimatic variables and soybean phenology data. Under current climatic conditions, R. pedestris exhibited a predominantly temperate East Asian distribution, with suitable areas extending farther north and northeast. By contrast, N. viridula showed a more southerly and spatially continuous distribution across South and Southeast Asia, with suitability declining markedly toward northern and northeastern Asia. By the 2090s under SSP5-8.5, suitable areas decreased by 26.7% for N. viridula but increased by 34.0% for R. pedestris, and the co-suitable area declined from 9.460 to 7.350 million km². PCA env indicated low to moderate niche overlap (Schoener’s D = 0.278) with significant niche differentiation. Under fixed soybean calendars, mean PMI generally increased for both pests, although the increase plateaued for R. pedestris under high emission scenarios by the late 21st century. Collectively, these findings indicate that Asian soybean production regions currently face overlapping damage risk, that the potential damage zone of R. pedestris is likely to expand further, and that the temporal overlap between the soybean sensitive period and adult activity windows of both pests will generally increase—despite the projected contraction in the potential damage distribution of N. viridula. Full article

Squash leaf curl China virus (SLCCNV) is an important geminivirus that infects cucurbit crops and is widely distributed across Asia. To elucidate its population structure and molecular evolution, 101 DNA-A and 67 DNA-B strain sequences of SLCCNV that were publicly available from 2001 to 2024 were analyzed. The strains clustered into three major geographic clades, including South Asia, the Malay Archipelago, and Mainland Southeast Asia. Recombination analysis revealed breakpoints mainly concentrated in the AC2 and BC1 regions. Signals of positive selection were indicated for AC4 and AC5 by selection pressure analysis. Significant genetic differentiation among SLCCNV populations from different geographic origins, but frequent gene flow was observed between among populations from South Asia, the Malay Archipelago, and Mainland Southeast Asia. In addition, AC5 and AV2 exhibited high variability at both the nucleotide and amino acid levels, while AC1, AC2, and AC3 were relatively conserved. Collectively, the evolutionary dynamics of SLCCNV are shaped by geographic isolation, recombination events, and differential selection pressures. This study provides important insights into the molecular evolution of SLCCNV and offers valuable guidance for region-specific surveillance, quarantine strategies, and the deployment of durable resistance against emerging viral variants. Full article

The Guangdong–Hong Kong–Macao Greater Bay Area (GBA) comprises the two Special Administrative Regions of Hong Kong and Macao, and the nine municipalities of Guangzhou, Shenzhen, Zhuhai, Foshan, Huizhou, Dongguan, Zhongshan, Jiangmen and Zhaoqing in Guangdong Province. The GBA serves as China’s strategic maritime hub and a core engine for marine economic development. However, existing research has underexplored the structural connectivity and topological resilience of its port network from the perspective of a maritime corridor within the GBA. Therefore, using port network data from 2022 to 2023, this study identifies the core topological structure of the GBA maritime corridor and examines how resilience evolves under stochastic connection disruptions. The results show that the GBA maritime corridor exhibits an asymmetric cross-shaped backbone structure that connects domestic coastal ports with international markets (Southeast Asia, Japan, and South Korea). The network density of the GBA port system reaches 0.41258, indicating substantial connectivity that supports efficient regional and global logistics circulation. Regarding resilience level, the probability of connection disruption is the key factor that significantly affects the stability and anti-interference ability of the GBA maritime network. These findings clarify the backbone framework of the maritime corridor for marine economic development, thereby providing theoretical support for strengthening the safety and stability of the GBA maritime transport system. Full article

How did exchanges between the architecture, engineering, and construction sectors of postcolonial states challenge dominant patterns of North–South technology transfer, and actively begin to construct the substantive scaffolding of an alternative international order? This article proposes a theoretical framework for understanding South–South exchange as a distinct spatial practice in postcolonial architectural history, recovering previously unexplored patterns of circulation—construction technologies, professional expertise, contracting capacity—that connected allegedly peripheral geographies spanning from Southeast Asia and Africa to the Caribbean and Southeast Europe. It draws on Doreen Massey’s concept of ‘power geometry’, Anna Tsing’s theorization of ‘friction’, and Édouard Glissant’s ‘archipelagic thinking’ to develop three analytical movements: Geometries, Powers, and Archipelagic Relations. Together these map the lateral circulation of expertise, technology, and labor among postcolonial nations operating outside the North-South and East–West axes around which twentieth-century architectural history has largely been organized. The paper argues that the prevailing diffusionist model resembles a two-body gravitational system that forecloses the possibility of lateral force, and treats South–South exchanges instead as orbital anomalies, persistent deviations from predicted paths that reveal an unseen distributed gravitational field. Rather than organizing around a metropolitan vertex, this field constitutes what computational geometry calls an ‘unstructured mesh’: contingent, uncentered, and variable in its local density. The mesh’s topology traces across a range of exchanges drawn from the forthcoming edited volume South–South: Non-Alignment and Cooperation in the Construction of the Global South, which brings together contributions from a dozen scholars of postcolonial architecture. The case studies include triangulations in which prefabrication technology traveled between Yugoslavia, Cuba, and Angola, and professional expertise looped between India, Africa and Europe. The motivational fields and frictions that drove and transformed each exchange are examined in turn. The article culminates in a reading of the Non-Aligned Movement (NAM) and the Afro-Asian Housing Organisation (AAHO) through Glissant’s concepts of relation and opacity—the right of postcolonial actors to participate in exchange without becoming fully legible to Cold War systems that demanded every alignment be declared. By challenging prevailing narratives that position the ‘Global South’ primarily as recipient rather than generator of innovation, the article contributes to a decolonial architectural historiography that shows how the political project of Non-Alignment was substantively materialized in the production of the built environment. Recovering these alternate forms of architectural flow demands a South–South historiographical orientation as a corrective to the field’s persistent centeredness, and offers historical insight no less relevant today for rethinking the potential, and the challenges, of contemporary transnational cooperation. Full article

Deforestation remains a crucial Anthropocene challenge, driving biodiversity loss, carbon emissions, and socio-ecological disruption. Despite extensive study, the long-term structure, thematic evolution, and collaborative patterns of deforestation research remain insufficiently synthesized. This bibliometric analysis examines 5091 publications from WoS and Scopus (1974–2025), using RStudio (version 4.5.2 (31 October 2025)), VOSViewer (version 1.6.20), and Excel to analyze publication trends, citation patterns, thematic clusters, and collaboration networks. Results show rapid growth after 2000, with citation peaks in 2010 and 2020. Major thematic clusters include deforestation, climate change, agriculture, governance, REDD+, and remote sensing. Environmental Research Letters is the most influential journal; Fearnside, P., is the leading author, and the UC system is a top institution. The USA and Brazil lead nationally, with the Amazon, Congo Basin, and Southeast Asia as primary geographic foci, reflecting persistent North–South collaboration dynamics. Limitations include reliance on English-language publications and title-only search criteria, which may underrepresent non-Anglophone research. Future research should expand to multiple languages, incorporate gray literature, and examine the policy impacts of deforestation-free supply chain regulations, such as the EUDR. This review underscores deforestation science as a growing, multidisciplinary field that requires the integration of social and ecological sciences, AI, and geospatial tools, alongside stronger research-policy linkages and enhanced capacity in forest-affected regions. Full article